Documentation: Specify grayscale specification on ATIK-ATK16
   and ATIK-ATK16HR comments.
New: Add ProductID and VendorID for devices ATIK-ATK16C and
   ATIK-ATK16HRC. These devices are also USB Astronomical CCD
   cameras that work through an FTDI 245BM chip, share the
   same base hardware but, it has a colour CCD chip instead
   of a grayscale one.
Signed-off-by: Rui Santos <rsantos@grupopie.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>